//
//  WBHomeViewController.swift
//  ZZY微博
//
//  Created by 庄壮勇 on 2018/1/11.
//  Copyright © 2018年 Personal. All rights reserved.
//

import UIKit

// 定义全局常量，尽量使用private修饰，否则到处都可以访问
private let cellId = "cellId"

class WBHomeViewController: WBBaseViewController {

    /// 列表视图模型
    private lazy var listViewModel = WBStatusListViewModel()
    
    /// 加载数据
    override func loadData() {
       // print("准备刷新 \(String(describing: self.listViewModel.statusList.last?.text))")
        listViewModel.loadStatus(pullup: self.isPullup) { (isSuccess, shouldRefresh) in
           // print("加载数据结束 \(String(describing: self.listViewModel.statusList.last?.text))")
            // 结束刷新控件
            self.refreshControl?.endRefreshing()
            // 恢复上拉刷新标记
            self.isPullup = false
            
            // 刷新表格
            if shouldRefresh  {
                self.tableView?.reloadData()
            }
        }
    }
    
   /// 显示好友
    @objc private func showFriends() {
        print(#function)
        let vc = WBDemoViewController()
        
        // push 的动作是 nav 做的
        navigationController?.pushViewController(vc, animated: true)
    }
}

// MARK - 表格数据源方法,具体的数据源方法实现， 不需要 super
extension WBHomeViewController {
    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return listViewModel.statusList.count
    }
    
    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        // 1. 取cell
        let cell = tableView.dequeueReusableCell(withIdentifier: cellId, for: indexPath)
        
        // 2. 设置 cell
        cell.textLabel?.text = listViewModel.statusList[indexPath.row].text
        // 3. 返回cell
        return cell
    }
}


// MARK: - 设置界面
extension WBHomeViewController {
    
    override func setupTableView() {
        
        super.setupTableView()
   
        // 设置导航栏按钮
        navItem.leftBarButtonItem = UIBarButtonItem(title: "好友", target: self, action: #selector(showFriends))
        
        // 注册原型 cell
        tableView?.register(UITableViewCell.self, forCellReuseIdentifier: cellId)
    
        setupNavTitle()
    }
    
    /// 设置导航栏标题
    private func setupNavTitle() {
        let title = WBNetworkManager.shared.userAccount.screen_name
        let button =  WBTitleButton(title: title)
        navItem.titleView = button
        button.addTarget(self, action: #selector(clickTitleButton), for: .touchUpInside)
    }
    @objc func clickTitleButton(btn: UIButton) {
        
        // 设置选中状态
        btn.isSelected = !btn.isSelected
    }
    
}
